QueenMermaimon is a Xros form of LadyScorpiomon and Mermaimon. Its attack Lust Plunder, puts her opponent under her spell hypnotizing in lust while deceiving them with sour hugs. She has an evil yellow matriarch of LadyScorpiomon floating at her shoulder. LadyScorpiomon gained a ghastly final form by absorbing evil life energy.

She bewitches an enemy with her luring voice and beautiful looks before going on the offensive. LadyScorpiomon Matriarch Mode also had no regard for her minions and used them for her own gain.